black sea red data book - Department of Biology

Aythya nyroca Guldenstadt, 1770
Synonyms: Anas nyroca Guldenstadt, 1770 (1769)
Common names: Engl: Ferruginous duck; Russ: Beloglazy nyroc; Turk: Karabas;
Ukr: Bilooka chern'
IUCN Status:
World level:
Black Sea Regional level:
Subregion level: VU
Distribution, Habitat type, Critical habitats, Limiting factors. Breeding habitats
are deep lakes, large lagoons, sandy spits with water-bodies covered by reeds, and
river estuaries.
Biology. The spring arrival of the first flock occurs between the end of February and
the first third of March. Mass immigration at the end of March. Breeding begins in
May. The nest is situated on broken reeds. The clutch consists of 6-14 eggs.
Incubation takes 25-28 days. In autumn, the birds depart imperceptibly from the end
of September till the end of October. Small groups of stay to overwinter in the region
of the Danube and Black Sea Reserves and on the Southern coast of the Crimea. This
duck mainly eats plants.
Order ANSERIFORMES
Family ANATDDAE
Taxonomic description. See Lysenko, 1994.
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